Feeding pulp to papeb-making machiites



-UNITED STATES PATENT oEErcE.

ISRAEL KINSEY, OF HOHOKUS, NEW JERSEY.

fi FEELING PULP To PAPER-MAKING MACHINES.

Specification of Letters Patent No. 15,852, `dated. October 7, 1856.

To all 'whom 25 may concern Be it known that I, ISRAEL KINSEY, ofHohokus, in the county of Bergen, State of `New Jersey, have invented anew and useful `Mode of Regulating the Feeding of Pulp feeding chest ofany convenient dimensions.

a is a slide operated by the screw b to regulate the opening of thedischarge aperture atp.

n is a scale.

B Fig. l is a float connected by the rods (Z and e and the lever C witha valve formed of a conical plug and a cylinder, as shown in nearly fullsize at Fig. 2; the cylinder is placed in the receiver D Fig. l its topedge being level with the bottom of receiver, the` form of theplugcauses a great difference inthe aperture with a very slight movement ofthe float. y

rlhe pulp passes from the grinder into the vat E, (commonly termed thestuff-chest) in which is a stirring apparatus `(technically termed ahog)- to equalize the consistency of the pulp; this is in common use in`all paper mills, to this stuff chest- E an airtight receiver D isattached and has an open connection with the bottom of the stuff chestE, a tube g is inserted through the top of the receiver D, through whichthe valve rod e passes to the valve at the bottom, the pulp of coursestanding at the same height in g as in E.

The feed has hitherto been direct from the vat or pulp chest E andrequired constant watch and attention to enlarge by hand the aperture ofdischarge as the decrease of pulp in the chest lessened the hydraulicpressure,unre1nitting care alone enabled the operator to produce paperof a tolerable uniformity of the thickness and weight. By theinterposition of the supply chest Awith the float and valve all thewatch., care and trouble are` entirely obviated, an equal pressure atthe discharge aperture p is obtained and paper of a uniform thicknessand weight can be continuously made `with an ease and certainly hithertounknown.

I propose to use graduated weights in the float as a part of the meansof regulating the dow of pulp. l

What I claim as new and desire to secure by Letters Patent is:

Regulating the flow of pulp for making paper upon the web or cylinder ofthe paper machine, by the pressure of the pulp in a box A receiving itssupply of pulp fro-1n the stuf-chest E through the aperture `y in the`trunk D and discharging it through an adadjustable aperture p, below thesurface of the pulp in the box A; the pressure being regulated and keptuniform by the height of the pulp 7L in the box A, which is adjusted andmaintained by means of a valve e', fitting the aperture f, operated by afloat B substantially as described; the combinatio-n of the severalparts forming a self-ach ing regulator for the purpose of making paperof equal thickness.

ISRAEL KINSEY.

vWitnesses:

YVM. M. GooDrNc, JOHN N. MEEKES.

